[U-Boot] PCI on mpc832x?

[Joakim Tjernlund]

Scott Wood <scottwood at freescale.com> wrote on 23/04/2009 18:40:01:
> 
> On Thu, Apr 23, 2009 at 03:32:11PM +0200, Joakim Tjernlund wrote:
> > Still trying to wrap my head around PCI and I wonder if I need to do 
some
> > HW init in u-boot in order to use the PCI controller in Linux?
> 
> Yes.  See pci_init_board() in mpc8323erdb for an example.

Thanks Scott, this was very helpful.

I am trying to map the "ranges" property in the OF tree and I am looking 
at
the dts files in the kernel tree.
There are three that comes somewhat close but they all have somewhat 
different
"ranges" propery:

mpc832x_mds.dts:
ranges = <0x02000000 0x0 0x90000000 0x90000000 0x0 0x10000000
           0x42000000 0x0 0x80000000 0x80000000 0x0 0x10000000
           0x01000000 0x0 0x00000000 0xd0000000 0x0 0x00100000>;

mpc832x_rdb.dts:
ranges = <0x42000000 0x0 0x80000000 0x80000000 0x0 0x10000000
           0x02000000 0x0 0x90000000 0x90000000 0x0 0x10000000
           0x01000000 0x0 0xd0000000 0xd0000000 0x0 0x04000000>;

mpc8313erdb.dts:
ranges = <0x02000000 0x0 0x90000000 0x90000000 0x0 0x10000000
           0x42000000 0x0 0x80000000 0x80000000 0x0 0x10000000
           0x01000000 0x0 0x00000000 0xe2000000 0x0 0x00100000>;

Don't understand how I should do here. Just select the mpc832x_rdb.dts
"ranges" and define my base addresses similarly?
#define CFG_PCI1_MEM_BASE       0x80000000
#define CFG_PCI1_MEM_PHYS       CFG_PCI1_MEM_BASE
#define CFG_PCI1_MEM_SIZE       0x10000000      /* 256M */
#define CFG_PCI1_MMIO_BASE        0x90000000
#define CFG_PCI1_MMIO_PHYS        CFG_PCI1_MMIO_BASE
#define CFG_PCI1_MMIO_SIZE        0x10000000    /* 256M */
#define CFG_PCI1_IO_BASE        0xd0000000
#define CFG_PCI1_IO_PHYS        CFG_PCI1_IO_BASE
#define CFG_PCI1_IO_SIZE        0x4000000       /* 64M */

  Jocke